Exterior facing surface configuration of a rear light of an automobile



FIG. 1 is a front view of the exterior facing surface configuration of a rear light of an automobile according to our novel design, the broken lines are for illustrative purposes only and form no part of the claimed design; and,

FIG. 2 is a perspective front view, taken from the left side, of the exterior facing surface configuration of a rear light of an automobile according to our novel design. 

The ornamental design for an exterior facing surface configuration of a rear light of an automobile, as shown and described. 